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/usr/lib/lv2/mda.lv2/SubSynth.ttl is in mda-lv2 1.2.2~dfsg0-1.

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@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
@prefix mda: <http://drobilla.net/plugins/mda/> .
@prefix param: <http://lv2plug.in/ns/ext/parameters#> .
@prefix pg: <http://lv2plug.in/ns/ext/port-groups#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

mda:SubSynth
	lv2:symbol "SubSynth" ;
	lv2:project mda: ;
	doap:name "MDA SubSynth" ;
	doap:shortdesc "Several low frequency enhancement methods" ;
	doap:license <http://usefulinc.com/doap/licenses/gpl> ;
	lv2:optionalFeature lv2:hardRTCapable ;
	pg:mainInput mda:mainIn ;
	pg:mainOutput mda:mainOut ;
    rdfs:comment """More bass than you could ever need!

Be aware that you may be adding low frequency content outside the range of your monitor speakers.  To avoid clipping, follow with a limiter plug-in (this can also give some giant hip-hop drum sounds!).""" ;
	lv2:port [
		a lv2:InputPort ,
			lv2:ControlPort ;
		lv2:index 0 ;
		lv2:name "Type" ;
		lv2:symbol "type" ;
		lv2:default 0.0 ;
		lv2:minimum 0.0 ;
		lv2:maximum 1.0 ;
		lv2:portProperty lv2:enumeration ;
		lv2:scalePoint [
			rdf:value 0.0 ;
			rdfs:label "Distort" ;
			rdfs:comment "Takes the existing low frequencies, clips them to produce harmonics at a constant level, then filters out the higher harmonics. Has a similar effect to compressing the low frequencies."
		] , [
			rdf:value 0.25 ;
			rdfs:label "Divide" ;
			rdfs:comment "As above, but works at an octave below the input frequency, like an octave divider guitar pedal."
		] , [
			rdf:value 0.5 ;
			rdfs:label "Invert" ;
			rdfs:comment "Flips the phase of the low frequency signal once per cycle to add a smooth sub-octave. A simplified version of the classic Sub-Harmonic Synthesizer."
		] , [
			rdf:value 0.75 ;
			rdfs:label "Key Osc." ;
			rdfs:comment """Adds a decaying "boom" - usually made with an oscillator before a noise gate keyed with the kick drum signal."""
		]
	] , [
		a lv2:InputPort ,
			lv2:ControlPort ;
		lv2:index 1 ;
		lv2:name "Level" ;
		lv2:symbol "level" ;
		lv2:default 0.3 ;
		lv2:minimum 0.0 ;
		lv2:maximum 1.0 ;
		rdfs:comment "Amount of synthesized low frequency signal to be added"
	] , [
		a lv2:InputPort ,
			lv2:ControlPort ;
		lv2:index 2 ;
		lv2:name "Tune" ;
		lv2:symbol "tune" ;
		lv2:default 0.6 ;
		lv2:minimum 0.0 ;
		lv2:maximum 1.0 ;
		rdfs:comment "Maximum frequency - keep as low as possible to reduce distortion. In Key Osc mode sets the oscillator frequency"
	] , [
		a lv2:InputPort ,
			lv2:ControlPort ;
		lv2:index 3 ;
		lv2:name "Dry Mix" ;
		lv2:symbol "dry_mix" ;
		lv2:default 1.0 ;
		lv2:minimum 0.0 ;
		lv2:maximum 1.0 ;
		rdfs:comment "Reduces the level of the original signal"
	] , [
		a lv2:InputPort ,
			lv2:ControlPort ;
		lv2:index 4 ;
		lv2:name "Thresh" ;
		lv2:symbol "thresh" ;
		lv2:default 0.6 ;
		lv2:minimum 0.0 ;
		lv2:maximum 1.0 ;
		rdfs:comment """Increase to "gate" the low frequency effect and stop unwanted background rumbling"""
	] , [
		a lv2:InputPort ,
			lv2:ControlPort ;
		lv2:index 5 ;
		lv2:name "Release" ;
		lv2:symbol "release" ;
		lv2:default 0.65 ;
		lv2:minimum 0.0 ;
		lv2:maximum 1.0 ;
		lv2:designation param:release ;
		rdfs:comment "Decay time in Key Osc mode"
	] , [
		a lv2:InputPort ,
			lv2:AudioPort ;
		lv2:index 6 ;
		lv2:symbol "left_in" ;
		lv2:name "Left In" ;
		lv2:designation pg:left ;
		pg:group mda:mainIn
	] , [
		a lv2:InputPort ,
			lv2:AudioPort ;
		lv2:index 7 ;
		lv2:symbol "right_in" ;
		lv2:name "Right In" ;
		lv2:designation pg:right ;
		pg:group mda:mainIn
	] , [
		a lv2:OutputPort ,
			lv2:AudioPort ;
		lv2:index 8 ;
		lv2:symbol "left_out" ;
		lv2:name "Left Out" ;
		lv2:designation pg:left ;
		pg:group mda:mainOut
	] , [
		a lv2:OutputPort ,
			lv2:AudioPort ;
		lv2:index 9 ;
		lv2:symbol "right_out" ;
		lv2:name "Right Out" ;
		lv2:designation pg:right ;
		pg:group mda:mainOut
	] .